package com.huohuo.javabasic;

import java.util.HashMap;
import java.util.Map;

public class A {
    public static void main(String[] args) {
        Map a = new HashMap<>();
        for (int i=1;i<17;i++){
            a.put(String.valueOf( i ) ,String.valueOf( i ) );
        }
        System.out.println(a.size());
        System.out.println(a);
    }
}
